- kbd_ioctl() uses it's own locking via lockmgr() and the
syscons softc is protected using a mutex, so we better
avoid both locks at once due possible blocking issues.
In fact, in my particular case the panic only occurs in
real hardware, while on a VMWare VM I had a lockup.
- Only found in 4-CPU SMP setups.
- Discovered via DEBUG_LOCKS option.